84. Two proteins have similar molecular masses (protein A: isoelectric point 5.8, 50 kDa; protein B: isoelectric point 8.5, 50.5 kDa). Which technique would most effectively separate them?
(A) Size-exclusion chromatography
(B) Ion exchange chromatography
(C) SDS-PAGE
(D) Ultracentrifugation
(E) X-ray crystallography

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統計: A(0), B(5), C(1), D(1), E(1) #3852938

詳解 (共 2 筆)

#7376937

由於兩個蛋白質的分子量相近,故不能以電泳或是size exclusion chromatography 分離,不過可以發現兩者的等電點不同,所以可以利用ion exchange chromatography 來進行分離

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